* [v2 3/3] hwmon: (nct7904) Add extra sysfs support for fan, voltage and temperature.
[not found] <928e46508bbe1ebc0763c3d2403a5aebe95af552.1561959015.git.amy.shih@advantech.com.tw>
@ 2019-07-01 5:32 ` Amy.Shih
2019-07-01 13:22 ` Guenter Roeck
0 siblings, 1 reply; 4+ messages in thread
From: Amy.Shih @ 2019-07-01 5:32 UTC (permalink / raw)
To: she90122
Cc: amy.shih, oakley.ding, jia.sui, Jean Delvare, Guenter Roeck,
linux-hwmon, linux-kernel
From: "amy.shih" <amy.shih@advantech.com.tw>
NCT-7904D also supports reading of channel limitation registers
and SMI status registers for fan, voltage and temperature monitoring,
and also supports reading of temperature sensor type which is thermal diode,
thermistor, AMD SB-TSI or Intel PECI, thus add below sysfs nodes:
-fan[1-*]_min
-fan[1-*]_alarm
-in[1-*]_min
-in[1-*]_max
-in[1-*]_alarm
-temp[1-*]_max
-temp[1-*]_max_hyst
-temp[1-*]_crit
-temp[1-*]_crit_hyst
-temp[1-*]_alarm
-temp[1-*]_type
Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
---
Changes in v2:
- Fix bad fallthrough in various switch statements.
- Fix the wrong declared of tmp as u8 in nct7904_write_in, declared tmp to int.
- Fix incorrect register setting of voltage.
- Fix incorrect register bit mapping of temperature alarm.
- Fix wrong return code 0x1fff in function nct7904_write_fan.
- Delete wrong comment in function nct7904_write_in.
- Fix wrong attribute names for temperature.
- Fix wrong registers setting for temperature.
---
drivers/hwmon/nct7904.c | 469 ++++++++++++++++++++++++++++++++++++----
1 file changed, 424 insertions(+), 45 deletions(-)
diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
index 710c30562fc1..d842c10ba11f 100644
--- a/drivers/hwmon/nct7904.c
+++ b/drivers/hwmon/nct7904.c
@@ -46,10 +46,33 @@
#define DTS_T_CTRL1_REG 0x27
#define VT_ADC_MD_REG 0x2E
+#define VSEN1_HV_LL_REG 0x02 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define VSEN1_LV_LL_REG 0x03 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define VSEN1_HV_HL_REG 0x00 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define VSEN1_LV_HL_REG 0x01 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define SMI_STS1_REG 0xC1 /* Bank 0; SMI Status Register */
+#define SMI_STS5_REG 0xC5 /* Bank 0; SMI Status Register */
+#define SMI_STS7_REG 0xC7 /* Bank 0; SMI Status Register */
+#define SMI_STS8_REG 0xC8 /* Bank 0; SMI Status Register */
+
#define VSEN1_HV_REG 0x40 /* Bank 0; 2 regs (HV/LV) per sensor */
#define TEMP_CH1_HV_REG 0x42 /* Bank 0; same as VSEN2_HV */
#define LTD_HV_REG 0x62 /* Bank 0; 2 regs in VSEN range */
+#define LTD_HV_HL_REG 0x44 /* Bank 1; 1 reg for LTD */
+#define LTD_LV_HL_REG 0x45 /* Bank 1; 1 reg for LTD */
+#define LTD_HV_LL_REG 0x46 /* Bank 1; 1 reg for LTD */
+#define LTD_LV_LL_REG 0x47 /* Bank 1; 1 reg for LTD */
+#define TEMP_CH1_CH_REG 0x05 /* Bank 1; 1 reg for LTD */
+#define TEMP_CH1_W_REG 0x06 /* Bank 1; 1 reg for LTD */
+#define TEMP_CH1_WH_REG 0x07 /* Bank 1; 1 reg for LTD */
+#define TEMP_CH1_C_REG 0x04 /* Bank 1; 1 reg per sensor */
+#define DTS_T_CPU1_C_REG 0x90 /* Bank 1; 1 reg per sensor */
+#define DTS_T_CPU1_CH_REG 0x91 /* Bank 1; 1 reg per sensor */
+#define DTS_T_CPU1_W_REG 0x92 /* Bank 1; 1 reg per sensor */
+#define DTS_T_CPU1_WH_REG 0x93 /* Bank 1; 1 reg per sensor */
#define FANIN1_HV_REG 0x80 /* Bank 0; 2 regs (HV/LV) per sensor */
+#define FANIN1_HV_HL_REG 0x60 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define FANIN1_LV_HL_REG 0x61 /* Bank 1; 2 regs (HV/LV) per sensor */
#define T_CPU1_HV_REG 0xA0 /* Bank 0; 2 regs (HV/LV) per sensor */
#define PRTS_REG 0x03 /* Bank 2 */
@@ -58,6 +81,8 @@
#define FANCTL1_FMR_REG 0x00 /* Bank 3; 1 reg per channel */
#define FANCTL1_OUT_REG 0x10 /* Bank 3; 1 reg per channel */
+#define ENABLE_TSI BIT(1)
+
static const unsigned short normal_i2c[] = {
0x2d, 0x2e, I2C_CLIENT_END
};
@@ -72,6 +97,7 @@ struct nct7904_data {
u8 fan_mode[FANCTL_MAX];
u8 enable_dts;
u8 has_dts;
+ u8 temp_mode; /* 0: TR mode, 1: TD mode */
};
/* Access functions */
@@ -170,6 +196,25 @@ static int nct7904_read_fan(struct device *dev, u32 attr, int channel,
rpm = 1350000 / cnt;
*val = rpm;
return 0;
+ case hwmon_fan_min:
+ ret = nct7904_read_reg16(data, BANK_1,
+ FANIN1_HV_HL_REG + channel * 2);
+ if (ret < 0)
+ return ret;
+ cnt = ((ret & 0xff00) >> 3) | (ret & 0x1f);
+ if (cnt == 0x1fff)
+ rpm = 0;
+ else
+ rpm = 1350000 / cnt;
+ *val = rpm;
+ return 0;
+ case hwmon_fan_alarm:
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS7_REG + (channel >> 3));
+ if (ret < 0)
+ return ret;
+ *val = (ret >> (channel & 0x07)) & 1;
+ return 0;
default:
return -EOPNOTSUPP;
}
@@ -179,8 +224,20 @@ static umode_t nct7904_fan_is_visible(const void *_data, u32 attr, int channel)
{
const struct nct7904_data *data = _data;
- if (attr == hwmon_fan_input && data->fanin_mask & (1 << channel))
- return 0444;
+ switch (attr) {
+ case hwmon_fan_input:
+ case hwmon_fan_alarm:
+ if (data->fanin_mask & (1 << channel))
+ return 0444;
+ break;
+ case hwmon_fan_min:
+ if (data->fanin_mask & (1 << channel))
+ return 0644;
+ break;
+ default:
+ break;
+ }
+
return 0;
}
@@ -211,6 +268,37 @@ static int nct7904_read_in(struct device *dev, u32 attr, int channel,
volt *= 6; /* 0.006V scale */
*val = volt;
return 0;
+ case hwmon_in_min:
+ ret = nct7904_read_reg16(data, BANK_1,
+ VSEN1_HV_LL_REG + index * 4);
+ if (ret < 0)
+ return ret;
+ volt = ((ret & 0xff00) >> 5) | (ret & 0x7);
+ if (index < 14)
+ volt *= 2; /* 0.002V scale */
+ else
+ volt *= 6; /* 0.006V scale */
+ *val = volt;
+ return 0;
+ case hwmon_in_max:
+ ret = nct7904_read_reg16(data, BANK_1,
+ VSEN1_HV_HL_REG + index * 4);
+ if (ret < 0)
+ return ret;
+ volt = ((ret & 0xff00) >> 5) | (ret & 0x7);
+ if (index < 14)
+ volt *= 2; /* 0.002V scale */
+ else
+ volt *= 6; /* 0.006V scale */
+ *val = volt;
+ return 0;
+ case hwmon_in_alarm:
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS1_REG + (index >> 3));
+ if (ret < 0)
+ return ret;
+ *val = (ret >> (index & 0x07)) & 1;
+ return 0;
default:
return -EOPNOTSUPP;
}
@@ -221,9 +309,20 @@ static umode_t nct7904_in_is_visible(const void *_data, u32 attr, int channel)
const struct nct7904_data *data = _data;
int index = nct7904_chan_to_index[channel];
- if (channel > 0 && attr == hwmon_in_input &&
- (data->vsen_mask & BIT(index)))
- return 0444;
+ switch (attr) {
+ case hwmon_in_input:
+ case hwmon_in_alarm:
+ if (channel > 0 && (data->vsen_mask & BIT(index)))
+ return 0444;
+ break;
+ case hwmon_in_min:
+ case hwmon_in_max:
+ if (channel > 0 && (data->vsen_mask & BIT(index)))
+ return 0644;
+ break;
+ default:
+ break;
+ }
return 0;
}
@@ -233,6 +332,7 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
{
struct nct7904_data *data = dev_get_drvdata(dev);
int ret, temp;
+ unsigned int reg1, reg2, reg3;
switch (attr) {
case hwmon_temp_input:
@@ -250,16 +350,100 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
temp = ((ret & 0xff00) >> 5) | (ret & 0x7);
*val = sign_extend32(temp, 10) * 125;
return 0;
+ case hwmon_temp_alarm:
+ if (channel < 5) {
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS1_REG);
+ if (ret < 0)
+ return ret;
+ *val = (ret >> (((channel * 2) + 1) & 0x07)) & 1;
+ } else {
+ if ((channel - 5) < 4) {
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS7_REG +
+ ((channel - 5) >> 3));
+ if (ret < 0)
+ return ret;
+ *val = (ret >> ((channel - 5) & 0x07)) & 1;
+ } else {
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS8_REG +
+ ((channel - 5) >> 3));
+ if (ret < 0)
+ return ret;
+ *val = (ret >> (((channel - 5) & 0x07) - 4))
+ & 1;
+ }
+ }
+ return 0;
+ case hwmon_temp_type:
+ if (channel < 5) {
+ if ((data->tcpu_mask >> channel) & 0x01) {
+ if ((data->temp_mode >> channel) & 0x01)
+ *val = 3; /* TD */
+ else
+ *val = 4; /* TR */
+ } else {
+ *val = 0;
+ }
+ } else {
+ if ((data->has_dts >> (channel - 5)) & 0x01) {
+ if (data->enable_dts & ENABLE_TSI)
+ *val = 5; /* TSI */
+ else
+ *val = 6; /* PECI */
+ } else {
+ *val = 0;
+ }
+ }
+ return 0;
+ case hwmon_temp_max:
+ reg1 = LTD_HV_HL_REG;
+ reg2 = TEMP_CH1_W_REG;
+ reg3 = DTS_T_CPU1_W_REG;
+ break;
+ case hwmon_temp_max_hyst:
+ reg1 = LTD_LV_HL_REG;
+ reg2 = TEMP_CH1_WH_REG;
+ reg3 = DTS_T_CPU1_WH_REG;
+ break;
+ case hwmon_temp_crit:
+ reg1 = LTD_HV_LL_REG;
+ reg2 = TEMP_CH1_C_REG;
+ reg3 = DTS_T_CPU1_C_REG;
+ break;
+ case hwmon_temp_crit_hyst:
+ reg1 = LTD_LV_LL_REG;
+ reg2 = TEMP_CH1_CH_REG;
+ reg3 = DTS_T_CPU1_CH_REG;
+ break;
default:
return -EOPNOTSUPP;
}
+
+ if (channel == 4)
+ ret = nct7904_read_reg(data, BANK_1, reg1);
+ else if (channel < 5)
+ ret = nct7904_read_reg(data, BANK_1,
+ reg2 + channel * 8);
+ else
+ ret = nct7904_read_reg(data, BANK_1,
+ reg3 + (channel - 5) * 4);
+
+ if (ret < 0)
+ return ret;
+ *val = ret * 1000;
+ return 0;
}
static umode_t nct7904_temp_is_visible(const void *_data, u32 attr, int channel)
{
const struct nct7904_data *data = _data;
- if (attr == hwmon_temp_input) {
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_alarm:
+ case hwmon_temp_type:
if (channel < 5) {
if (data->tcpu_mask & BIT(channel))
return 0444;
@@ -267,6 +451,21 @@ static umode_t nct7904_temp_is_visible(const void *_data, u32 attr, int channel)
if (data->has_dts & BIT(channel - 5))
return 0444;
}
+ break;
+ case hwmon_temp_max:
+ case hwmon_temp_max_hyst:
+ case hwmon_temp_crit:
+ case hwmon_temp_crit_hyst:
+ if (channel < 5) {
+ if (data->tcpu_mask & BIT(channel))
+ return 0644;
+ } else {
+ if (data->has_dts & BIT(channel - 5))
+ return 0644;
+ }
+ break;
+ default:
+ break;
}
return 0;
@@ -297,6 +496,137 @@ static int nct7904_read_pwm(struct device *dev, u32 attr, int channel,
}
}
+static int nct7904_write_temp(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct nct7904_data *data = dev_get_drvdata(dev);
+ int ret;
+ unsigned int reg1, reg2, reg3;
+
+ val = clamp_val(val / 1000, -128, 127);
+
+ switch (attr) {
+ case hwmon_temp_max:
+ reg1 = LTD_HV_HL_REG;
+ reg2 = TEMP_CH1_W_REG;
+ reg3 = DTS_T_CPU1_W_REG;
+ break;
+ case hwmon_temp_max_hyst:
+ reg1 = LTD_LV_HL_REG;
+ reg2 = TEMP_CH1_WH_REG;
+ reg3 = DTS_T_CPU1_WH_REG;
+ break;
+ case hwmon_temp_crit:
+ reg1 = LTD_HV_LL_REG;
+ reg2 = TEMP_CH1_C_REG;
+ reg3 = DTS_T_CPU1_C_REG;
+ break;
+ case hwmon_temp_crit_hyst:
+ reg1 = LTD_LV_LL_REG;
+ reg2 = TEMP_CH1_CH_REG;
+ reg3 = DTS_T_CPU1_CH_REG;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ if (channel == 4)
+ ret = nct7904_write_reg(data, BANK_1, reg1, val);
+ else if (channel < 5)
+ ret = nct7904_write_reg(data, BANK_1,
+ reg2 + channel * 8, val);
+ else
+ ret = nct7904_write_reg(data, BANK_1,
+ reg3 + (channel - 5) * 4, val);
+
+ return ret;
+}
+
+static int nct7904_write_fan(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct nct7904_data *data = dev_get_drvdata(dev);
+ int ret;
+ u8 tmp;
+
+ switch (attr) {
+ case hwmon_fan_min:
+ if (val <= 0)
+ return 0;
+
+ val = clamp_val((1350000 + (val >> 1)) / val, 1, 0x1fff);
+ tmp = (val >> 5) & 0xff;
+ ret = nct7904_write_reg(data, BANK_1,
+ FANIN1_HV_HL_REG + channel * 2, tmp);
+ if (ret < 0)
+ return ret;
+ tmp = val & 0x1f;
+ ret = nct7904_write_reg(data, BANK_1,
+ FANIN1_LV_HL_REG + channel * 2, tmp);
+ return ret;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int nct7904_write_in(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct nct7904_data *data = dev_get_drvdata(dev);
+ int ret, index, tmp;
+
+ index = nct7904_chan_to_index[channel];
+
+ if (index < 14)
+ val = val / 2; /* 0.002V scale */
+ else
+ val = val / 6; /* 0.006V scale */
+
+ val = clamp_val(val, 0, 0x7ff);
+
+ switch (attr) {
+ case hwmon_in_min:
+ tmp = nct7904_read_reg(data, BANK_1,
+ VSEN1_LV_LL_REG + index * 4);
+ if (tmp < 0)
+ return tmp;
+ tmp &= ~0x7;
+ tmp |= val & 0x7;
+ ret = nct7904_write_reg(data, BANK_1,
+ VSEN1_LV_LL_REG + index * 4, tmp);
+ if (ret < 0)
+ return ret;
+ tmp = nct7904_read_reg(data, BANK_1,
+ VSEN1_HV_LL_REG + index * 4);
+ if (tmp < 0)
+ return tmp;
+ tmp = (val >> 3) & 0xff;
+ ret = nct7904_write_reg(data, BANK_1,
+ VSEN1_HV_LL_REG + index * 4, tmp);
+ return ret;
+ case hwmon_in_max:
+ tmp = nct7904_read_reg(data, BANK_1,
+ VSEN1_LV_HL_REG + index * 4);
+ if (tmp < 0)
+ return tmp;
+ tmp &= ~0x7;
+ tmp |= val & 0x7;
+ ret = nct7904_write_reg(data, BANK_1,
+ VSEN1_LV_HL_REG + index * 4, tmp);
+ if (ret < 0)
+ return ret;
+ tmp = nct7904_read_reg(data, BANK_1,
+ VSEN1_HV_HL_REG + index * 4);
+ if (tmp < 0)
+ return tmp;
+ tmp = (val >> 3) & 0xff;
+ ret = nct7904_write_reg(data, BANK_1,
+ VSEN1_HV_HL_REG + index * 4, tmp);
+ return ret;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
static int nct7904_write_pwm(struct device *dev, u32 attr, int channel,
long val)
{
@@ -354,8 +684,14 @@ static int nct7904_write(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, long val)
{
switch (type) {
+ case hwmon_in:
+ return nct7904_write_in(dev, attr, channel, val);
+ case hwmon_fan:
+ return nct7904_write_fan(dev, attr, channel, val);
case hwmon_pwm:
return nct7904_write_pwm(dev, attr, channel, val);
+ case hwmon_temp:
+ return nct7904_write_temp(dev, attr, channel, val);
default:
return -EOPNOTSUPP;
}
@@ -404,51 +740,91 @@ static int nct7904_detect(struct i2c_client *client,
static const struct hwmon_channel_info *nct7904_info[] = {
HWMON_CHANNEL_INFO(in,
- HWMON_I_INPUT, /* dummy, skipped in is_visible */
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT),
+ /* dummy, skipped in is_visible */
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM),
HWMON_CHANNEL_INFO(fan,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT),
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM),
HWMON_CHANNEL_INFO(pwm,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE),
HWMON_CHANNEL_INFO(temp,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT),
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST),
NULL
};
@@ -530,11 +906,14 @@ static int nct7904_probe(struct i2c_client *client,
if (ret < 0)
return ret;
+ data->temp_mode = 0;
for (i = 0; i < 4; i++) {
val = (ret & (0x03 << i)) >> (i * 2);
bit = (1 << i);
if (val == 0)
data->tcpu_mask &= ~bit;
+ else if (val == 0x1 || val == 0x2)
+ data->temp_mode |= bit;
}
/* PECI */
@@ -557,7 +936,7 @@ static int nct7904_probe(struct i2c_client *client,
if (ret < 0)
return ret;
data->has_dts = ret & 0xF;
- if (data->enable_dts & 0x2) {
+ if (data->enable_dts & ENABLE_TSI) {
ret = nct7904_read_reg(data, BANK_0, DTS_T_CTRL1_REG);
if (ret < 0)
return ret;
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [v2 3/3] hwmon: (nct7904) Add extra sysfs support for fan, voltage and temperature.
2019-07-01 5:32 ` [v2 3/3] hwmon: (nct7904) Add extra sysfs support for fan, voltage and temperature Amy.Shih
@ 2019-07-01 13:22 ` Guenter Roeck
0 siblings, 0 replies; 4+ messages in thread
From: Guenter Roeck @ 2019-07-01 13:22 UTC (permalink / raw)
To: Amy.Shih, she90122
Cc: oakley.ding, jia.sui, Jean Delvare, linux-hwmon, linux-kernel
On 6/30/19 10:32 PM, Amy.Shih@advantech.com.tw wrote:
> From: "amy.shih" <amy.shih@advantech.com.tw>
>
> NCT-7904D also supports reading of channel limitation registers
> and SMI status registers for fan, voltage and temperature monitoring,
> and also supports reading of temperature sensor type which is thermal diode,
> thermistor, AMD SB-TSI or Intel PECI, thus add below sysfs nodes:
>
> -fan[1-*]_min
> -fan[1-*]_alarm
> -in[1-*]_min
> -in[1-*]_max
> -in[1-*]_alarm
> -temp[1-*]_max
> -temp[1-*]_max_hyst
> -temp[1-*]_crit
> -temp[1-*]_crit_hyst
> -temp[1-*]_alarm
> -temp[1-*]_type
>
> Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
> ---
> Changes in v2:
This is at least the third time you sent v2 of this patch. This version
changes the description (unless there are more hidden changes), the previous
version makes the changes mentioned here, and the previous "v2" had this
change log:
Changes in v2:
- Fix bad fallthrough in various switch statements.
- Fix the wrong declared of tmp as u8 in nct7904_write_in, declared tmp to int.
How do you expect me or anyone else to keep track ? _Please_ version your
patches correctly in the future. Each time you change something is a new
version, and each time please include the change log from previous versions.
Thanks,
Guenter
> - Fix bad fallthrough in various switch statements.
> - Fix the wrong declared of tmp as u8 in nct7904_write_in, declared tmp to int.
> - Fix incorrect register setting of voltage.
> - Fix incorrect register bit mapping of temperature alarm.
> - Fix wrong return code 0x1fff in function nct7904_write_fan.
> - Delete wrong comment in function nct7904_write_in.
> - Fix wrong attribute names for temperature.
> - Fix wrong registers setting for temperature.
> ---
> drivers/hwmon/nct7904.c | 469 ++++++++++++++++++++++++++++++++++++----
> 1 file changed, 424 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
> index 710c30562fc1..d842c10ba11f 100644
> --- a/drivers/hwmon/nct7904.c
> +++ b/drivers/hwmon/nct7904.c
> @@ -46,10 +46,33 @@
> #define DTS_T_CTRL1_REG 0x27
> #define VT_ADC_MD_REG 0x2E
>
> +#define VSEN1_HV_LL_REG 0x02 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define VSEN1_LV_LL_REG 0x03 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define VSEN1_HV_HL_REG 0x00 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define VSEN1_LV_HL_REG 0x01 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define SMI_STS1_REG 0xC1 /* Bank 0; SMI Status Register */
> +#define SMI_STS5_REG 0xC5 /* Bank 0; SMI Status Register */
> +#define SMI_STS7_REG 0xC7 /* Bank 0; SMI Status Register */
> +#define SMI_STS8_REG 0xC8 /* Bank 0; SMI Status Register */
> +
> #define VSEN1_HV_REG 0x40 /* Bank 0; 2 regs (HV/LV) per sensor */
> #define TEMP_CH1_HV_REG 0x42 /* Bank 0; same as VSEN2_HV */
> #define LTD_HV_REG 0x62 /* Bank 0; 2 regs in VSEN range */
> +#define LTD_HV_HL_REG 0x44 /* Bank 1; 1 reg for LTD */
> +#define LTD_LV_HL_REG 0x45 /* Bank 1; 1 reg for LTD */
> +#define LTD_HV_LL_REG 0x46 /* Bank 1; 1 reg for LTD */
> +#define LTD_LV_LL_REG 0x47 /* Bank 1; 1 reg for LTD */
> +#define TEMP_CH1_CH_REG 0x05 /* Bank 1; 1 reg for LTD */
> +#define TEMP_CH1_W_REG 0x06 /* Bank 1; 1 reg for LTD */
> +#define TEMP_CH1_WH_REG 0x07 /* Bank 1; 1 reg for LTD */
> +#define TEMP_CH1_C_REG 0x04 /* Bank 1; 1 reg per sensor */
> +#define DTS_T_CPU1_C_REG 0x90 /* Bank 1; 1 reg per sensor */
> +#define DTS_T_CPU1_CH_REG 0x91 /* Bank 1; 1 reg per sensor */
> +#define DTS_T_CPU1_W_REG 0x92 /* Bank 1; 1 reg per sensor */
> +#define DTS_T_CPU1_WH_REG 0x93 /* Bank 1; 1 reg per sensor */
> #define FANIN1_HV_REG 0x80 /* Bank 0; 2 regs (HV/LV) per sensor */
> +#define FANIN1_HV_HL_REG 0x60 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define FANIN1_LV_HL_REG 0x61 /* Bank 1; 2 regs (HV/LV) per sensor */
> #define T_CPU1_HV_REG 0xA0 /* Bank 0; 2 regs (HV/LV) per sensor */
>
> #define PRTS_REG 0x03 /* Bank 2 */
> @@ -58,6 +81,8 @@
> #define FANCTL1_FMR_REG 0x00 /* Bank 3; 1 reg per channel */
> #define FANCTL1_OUT_REG 0x10 /* Bank 3; 1 reg per channel */
>
> +#define ENABLE_TSI BIT(1)
> +
> static const unsigned short normal_i2c[] = {
> 0x2d, 0x2e, I2C_CLIENT_END
> };
> @@ -72,6 +97,7 @@ struct nct7904_data {
> u8 fan_mode[FANCTL_MAX];
> u8 enable_dts;
> u8 has_dts;
> + u8 temp_mode; /* 0: TR mode, 1: TD mode */
> };
>
> /* Access functions */
> @@ -170,6 +196,25 @@ static int nct7904_read_fan(struct device *dev, u32 attr, int channel,
> rpm = 1350000 / cnt;
> *val = rpm;
> return 0;
> + case hwmon_fan_min:
> + ret = nct7904_read_reg16(data, BANK_1,
> + FANIN1_HV_HL_REG + channel * 2);
> + if (ret < 0)
> + return ret;
> + cnt = ((ret & 0xff00) >> 3) | (ret & 0x1f);
> + if (cnt == 0x1fff)
> + rpm = 0;
> + else
> + rpm = 1350000 / cnt;
> + *val = rpm;
> + return 0;
> + case hwmon_fan_alarm:
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS7_REG + (channel >> 3));
> + if (ret < 0)
> + return ret;
> + *val = (ret >> (channel & 0x07)) & 1;
> + return 0;
> default:
> return -EOPNOTSUPP;
> }
> @@ -179,8 +224,20 @@ static umode_t nct7904_fan_is_visible(const void *_data, u32 attr, int channel)
> {
> const struct nct7904_data *data = _data;
>
> - if (attr == hwmon_fan_input && data->fanin_mask & (1 << channel))
> - return 0444;
> + switch (attr) {
> + case hwmon_fan_input:
> + case hwmon_fan_alarm:
> + if (data->fanin_mask & (1 << channel))
> + return 0444;
> + break;
> + case hwmon_fan_min:
> + if (data->fanin_mask & (1 << channel))
> + return 0644;
> + break;
> + default:
> + break;
> + }
> +
> return 0;
> }
>
> @@ -211,6 +268,37 @@ static int nct7904_read_in(struct device *dev, u32 attr, int channel,
> volt *= 6; /* 0.006V scale */
> *val = volt;
> return 0;
> + case hwmon_in_min:
> + ret = nct7904_read_reg16(data, BANK_1,
> + VSEN1_HV_LL_REG + index * 4);
> + if (ret < 0)
> + return ret;
> + volt = ((ret & 0xff00) >> 5) | (ret & 0x7);
> + if (index < 14)
> + volt *= 2; /* 0.002V scale */
> + else
> + volt *= 6; /* 0.006V scale */
> + *val = volt;
> + return 0;
> + case hwmon_in_max:
> + ret = nct7904_read_reg16(data, BANK_1,
> + VSEN1_HV_HL_REG + index * 4);
> + if (ret < 0)
> + return ret;
> + volt = ((ret & 0xff00) >> 5) | (ret & 0x7);
> + if (index < 14)
> + volt *= 2; /* 0.002V scale */
> + else
> + volt *= 6; /* 0.006V scale */
> + *val = volt;
> + return 0;
> + case hwmon_in_alarm:
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS1_REG + (index >> 3));
> + if (ret < 0)
> + return ret;
> + *val = (ret >> (index & 0x07)) & 1;
> + return 0;
> default:
> return -EOPNOTSUPP;
> }
> @@ -221,9 +309,20 @@ static umode_t nct7904_in_is_visible(const void *_data, u32 attr, int channel)
> const struct nct7904_data *data = _data;
> int index = nct7904_chan_to_index[channel];
>
> - if (channel > 0 && attr == hwmon_in_input &&
> - (data->vsen_mask & BIT(index)))
> - return 0444;
> + switch (attr) {
> + case hwmon_in_input:
> + case hwmon_in_alarm:
> + if (channel > 0 && (data->vsen_mask & BIT(index)))
> + return 0444;
> + break;
> + case hwmon_in_min:
> + case hwmon_in_max:
> + if (channel > 0 && (data->vsen_mask & BIT(index)))
> + return 0644;
> + break;
> + default:
> + break;
> + }
>
> return 0;
> }
> @@ -233,6 +332,7 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
> {
> struct nct7904_data *data = dev_get_drvdata(dev);
> int ret, temp;
> + unsigned int reg1, reg2, reg3;
>
> switch (attr) {
> case hwmon_temp_input:
> @@ -250,16 +350,100 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
> temp = ((ret & 0xff00) >> 5) | (ret & 0x7);
> *val = sign_extend32(temp, 10) * 125;
> return 0;
> + case hwmon_temp_alarm:
> + if (channel < 5) {
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS1_REG);
> + if (ret < 0)
> + return ret;
> + *val = (ret >> (((channel * 2) + 1) & 0x07)) & 1;
> + } else {
> + if ((channel - 5) < 4) {
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS7_REG +
> + ((channel - 5) >> 3));
> + if (ret < 0)
> + return ret;
> + *val = (ret >> ((channel - 5) & 0x07)) & 1;
> + } else {
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS8_REG +
> + ((channel - 5) >> 3));
> + if (ret < 0)
> + return ret;
> + *val = (ret >> (((channel - 5) & 0x07) - 4))
> + & 1;
> + }
> + }
> + return 0;
> + case hwmon_temp_type:
> + if (channel < 5) {
> + if ((data->tcpu_mask >> channel) & 0x01) {
> + if ((data->temp_mode >> channel) & 0x01)
> + *val = 3; /* TD */
> + else
> + *val = 4; /* TR */
> + } else {
> + *val = 0;
> + }
> + } else {
> + if ((data->has_dts >> (channel - 5)) & 0x01) {
> + if (data->enable_dts & ENABLE_TSI)
> + *val = 5; /* TSI */
> + else
> + *val = 6; /* PECI */
> + } else {
> + *val = 0;
> + }
> + }
> + return 0;
> + case hwmon_temp_max:
> + reg1 = LTD_HV_HL_REG;
> + reg2 = TEMP_CH1_W_REG;
> + reg3 = DTS_T_CPU1_W_REG;
> + break;
> + case hwmon_temp_max_hyst:
> + reg1 = LTD_LV_HL_REG;
> + reg2 = TEMP_CH1_WH_REG;
> + reg3 = DTS_T_CPU1_WH_REG;
> + break;
> + case hwmon_temp_crit:
> + reg1 = LTD_HV_LL_REG;
> + reg2 = TEMP_CH1_C_REG;
> + reg3 = DTS_T_CPU1_C_REG;
> + break;
> + case hwmon_temp_crit_hyst:
> + reg1 = LTD_LV_LL_REG;
> + reg2 = TEMP_CH1_CH_REG;
> + reg3 = DTS_T_CPU1_CH_REG;
> + break;
> default:
> return -EOPNOTSUPP;
> }
> +
> + if (channel == 4)
> + ret = nct7904_read_reg(data, BANK_1, reg1);
> + else if (channel < 5)
> + ret = nct7904_read_reg(data, BANK_1,
> + reg2 + channel * 8);
> + else
> + ret = nct7904_read_reg(data, BANK_1,
> + reg3 + (channel - 5) * 4);
> +
> + if (ret < 0)
> + return ret;
> + *val = ret * 1000;
> + return 0;
> }
>
> static umode_t nct7904_temp_is_visible(const void *_data, u32 attr, int channel)
> {
> const struct nct7904_data *data = _data;
>
> - if (attr == hwmon_temp_input) {
> + switch (attr) {
> + case hwmon_temp_input:
> + case hwmon_temp_alarm:
> + case hwmon_temp_type:
> if (channel < 5) {
> if (data->tcpu_mask & BIT(channel))
> return 0444;
> @@ -267,6 +451,21 @@ static umode_t nct7904_temp_is_visible(const void *_data, u32 attr, int channel)
> if (data->has_dts & BIT(channel - 5))
> return 0444;
> }
> + break;
> + case hwmon_temp_max:
> + case hwmon_temp_max_hyst:
> + case hwmon_temp_crit:
> + case hwmon_temp_crit_hyst:
> + if (channel < 5) {
> + if (data->tcpu_mask & BIT(channel))
> + return 0644;
> + } else {
> + if (data->has_dts & BIT(channel - 5))
> + return 0644;
> + }
> + break;
> + default:
> + break;
> }
>
> return 0;
> @@ -297,6 +496,137 @@ static int nct7904_read_pwm(struct device *dev, u32 attr, int channel,
> }
> }
>
> +static int nct7904_write_temp(struct device *dev, u32 attr, int channel,
> + long val)
> +{
> + struct nct7904_data *data = dev_get_drvdata(dev);
> + int ret;
> + unsigned int reg1, reg2, reg3;
> +
> + val = clamp_val(val / 1000, -128, 127);
> +
> + switch (attr) {
> + case hwmon_temp_max:
> + reg1 = LTD_HV_HL_REG;
> + reg2 = TEMP_CH1_W_REG;
> + reg3 = DTS_T_CPU1_W_REG;
> + break;
> + case hwmon_temp_max_hyst:
> + reg1 = LTD_LV_HL_REG;
> + reg2 = TEMP_CH1_WH_REG;
> + reg3 = DTS_T_CPU1_WH_REG;
> + break;
> + case hwmon_temp_crit:
> + reg1 = LTD_HV_LL_REG;
> + reg2 = TEMP_CH1_C_REG;
> + reg3 = DTS_T_CPU1_C_REG;
> + break;
> + case hwmon_temp_crit_hyst:
> + reg1 = LTD_LV_LL_REG;
> + reg2 = TEMP_CH1_CH_REG;
> + reg3 = DTS_T_CPU1_CH_REG;
> + break;
> + default:
> + return -EOPNOTSUPP;
> + }
> + if (channel == 4)
> + ret = nct7904_write_reg(data, BANK_1, reg1, val);
> + else if (channel < 5)
> + ret = nct7904_write_reg(data, BANK_1,
> + reg2 + channel * 8, val);
> + else
> + ret = nct7904_write_reg(data, BANK_1,
> + reg3 + (channel - 5) * 4, val);
> +
> + return ret;
> +}
> +
> +static int nct7904_write_fan(struct device *dev, u32 attr, int channel,
> + long val)
> +{
> + struct nct7904_data *data = dev_get_drvdata(dev);
> + int ret;
> + u8 tmp;
> +
> + switch (attr) {
> + case hwmon_fan_min:
> + if (val <= 0)
> + return 0;
> +
> + val = clamp_val((1350000 + (val >> 1)) / val, 1, 0x1fff);
> + tmp = (val >> 5) & 0xff;
> + ret = nct7904_write_reg(data, BANK_1,
> + FANIN1_HV_HL_REG + channel * 2, tmp);
> + if (ret < 0)
> + return ret;
> + tmp = val & 0x1f;
> + ret = nct7904_write_reg(data, BANK_1,
> + FANIN1_LV_HL_REG + channel * 2, tmp);
> + return ret;
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static int nct7904_write_in(struct device *dev, u32 attr, int channel,
> + long val)
> +{
> + struct nct7904_data *data = dev_get_drvdata(dev);
> + int ret, index, tmp;
> +
> + index = nct7904_chan_to_index[channel];
> +
> + if (index < 14)
> + val = val / 2; /* 0.002V scale */
> + else
> + val = val / 6; /* 0.006V scale */
> +
> + val = clamp_val(val, 0, 0x7ff);
> +
> + switch (attr) {
> + case hwmon_in_min:
> + tmp = nct7904_read_reg(data, BANK_1,
> + VSEN1_LV_LL_REG + index * 4);
> + if (tmp < 0)
> + return tmp;
> + tmp &= ~0x7;
> + tmp |= val & 0x7;
> + ret = nct7904_write_reg(data, BANK_1,
> + VSEN1_LV_LL_REG + index * 4, tmp);
> + if (ret < 0)
> + return ret;
> + tmp = nct7904_read_reg(data, BANK_1,
> + VSEN1_HV_LL_REG + index * 4);
> + if (tmp < 0)
> + return tmp;
> + tmp = (val >> 3) & 0xff;
> + ret = nct7904_write_reg(data, BANK_1,
> + VSEN1_HV_LL_REG + index * 4, tmp);
> + return ret;
> + case hwmon_in_max:
> + tmp = nct7904_read_reg(data, BANK_1,
> + VSEN1_LV_HL_REG + index * 4);
> + if (tmp < 0)
> + return tmp;
> + tmp &= ~0x7;
> + tmp |= val & 0x7;
> + ret = nct7904_write_reg(data, BANK_1,
> + VSEN1_LV_HL_REG + index * 4, tmp);
> + if (ret < 0)
> + return ret;
> + tmp = nct7904_read_reg(data, BANK_1,
> + VSEN1_HV_HL_REG + index * 4);
> + if (tmp < 0)
> + return tmp;
> + tmp = (val >> 3) & 0xff;
> + ret = nct7904_write_reg(data, BANK_1,
> + VSEN1_HV_HL_REG + index * 4, tmp);
> + return ret;
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> static int nct7904_write_pwm(struct device *dev, u32 attr, int channel,
> long val)
> {
> @@ -354,8 +684,14 @@ static int nct7904_write(struct device *dev, enum hwmon_sensor_types type,
> u32 attr, int channel, long val)
> {
> switch (type) {
> + case hwmon_in:
> + return nct7904_write_in(dev, attr, channel, val);
> + case hwmon_fan:
> + return nct7904_write_fan(dev, attr, channel, val);
> case hwmon_pwm:
> return nct7904_write_pwm(dev, attr, channel, val);
> + case hwmon_temp:
> + return nct7904_write_temp(dev, attr, channel, val);
> default:
> return -EOPNOTSUPP;
> }
> @@ -404,51 +740,91 @@ static int nct7904_detect(struct i2c_client *client,
>
> static const struct hwmon_channel_info *nct7904_info[] = {
> HWMON_CHANNEL_INFO(in,
> - HWMON_I_INPUT, /* dummy, skipped in is_visible */
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT),
> + /* dummy, skipped in is_visible */
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM),
> HWMON_CHANNEL_INFO(fan,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT),
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM),
> HWMON_CHANNEL_INFO(pwm,
> HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
> HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
> HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
> HWMON_PWM_INPUT | HWMON_PWM_ENABLE),
> HWMON_CHANNEL_INFO(temp,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT),
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST),
> NULL
> };
>
> @@ -530,11 +906,14 @@ static int nct7904_probe(struct i2c_client *client,
> if (ret < 0)
> return ret;
>
> + data->temp_mode = 0;
> for (i = 0; i < 4; i++) {
> val = (ret & (0x03 << i)) >> (i * 2);
> bit = (1 << i);
> if (val == 0)
> data->tcpu_mask &= ~bit;
> + else if (val == 0x1 || val == 0x2)
> + data->temp_mode |= bit;
> }
>
> /* PECI */
> @@ -557,7 +936,7 @@ static int nct7904_probe(struct i2c_client *client,
> if (ret < 0)
> return ret;
> data->has_dts = ret & 0xF;
> - if (data->enable_dts & 0x2) {
> + if (data->enable_dts & ENABLE_TSI) {
> ret = nct7904_read_reg(data, BANK_0, DTS_T_CTRL1_REG);
> if (ret < 0)
> return ret;
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [v2 3/3] hwmon: (nct7904) Add extra sysfs support for fan, voltage and temperature.
@ 2019-07-01 17:00 Guenter Roeck
0 siblings, 0 replies; 4+ messages in thread
From: Guenter Roeck @ 2019-07-01 17:00 UTC (permalink / raw)
To: Amy.Shih
Cc: she90122, oakley.ding, jia.sui, Jean Delvare, linux-hwmon, linux-kernel
On Mon, Jul 01, 2019 at 05:32:29AM +0000, Amy.Shih@advantech.com.tw wrote:
> From: "amy.shih" <amy.shih@advantech.com.tw>
>
> NCT-7904D also supports reading of channel limitation registers
> and SMI status registers for fan, voltage and temperature monitoring,
> and also supports reading of temperature sensor type which is thermal diode,
> thermistor, AMD SB-TSI or Intel PECI, thus add below sysfs nodes:
>
> -fan[1-*]_min
> -fan[1-*]_alarm
> -in[1-*]_min
> -in[1-*]_max
> -in[1-*]_alarm
> -temp[1-*]_max
> -temp[1-*]_max_hyst
> -temp[1-*]_crit
> -temp[1-*]_crit_hyst
> -temp[1-*]_alarm
> -temp[1-*]_type
>
> Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
> ---
> Changes in v2:
> - Fix bad fallthrough in various switch statements.
> - Fix the wrong declared of tmp as u8 in nct7904_write_in, declared tmp to int.
> - Fix incorrect register setting of voltage.
> - Fix incorrect register bit mapping of temperature alarm.
> - Fix wrong return code 0x1fff in function nct7904_write_fan.
> - Delete wrong comment in function nct7904_write_in.
> - Fix wrong attribute names for temperature.
> - Fix wrong registers setting for temperature.
> ---
> drivers/hwmon/nct7904.c | 469 ++++++++++++++++++++++++++++++++++++----
> 1 file changed, 424 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
> index 710c30562fc1..d842c10ba11f 100644
> --- a/drivers/hwmon/nct7904.c
> +++ b/drivers/hwmon/nct7904.c
> @@ -46,10 +46,33 @@
> #define DTS_T_CTRL1_REG 0x27
> #define VT_ADC_MD_REG 0x2E
>
> +#define VSEN1_HV_LL_REG 0x02 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define VSEN1_LV_LL_REG 0x03 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define VSEN1_HV_HL_REG 0x00 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define VSEN1_LV_HL_REG 0x01 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define SMI_STS1_REG 0xC1 /* Bank 0; SMI Status Register */
> +#define SMI_STS5_REG 0xC5 /* Bank 0; SMI Status Register */
> +#define SMI_STS7_REG 0xC7 /* Bank 0; SMI Status Register */
> +#define SMI_STS8_REG 0xC8 /* Bank 0; SMI Status Register */
> +
> #define VSEN1_HV_REG 0x40 /* Bank 0; 2 regs (HV/LV) per sensor */
> #define TEMP_CH1_HV_REG 0x42 /* Bank 0; same as VSEN2_HV */
> #define LTD_HV_REG 0x62 /* Bank 0; 2 regs in VSEN range */
> +#define LTD_HV_HL_REG 0x44 /* Bank 1; 1 reg for LTD */
> +#define LTD_LV_HL_REG 0x45 /* Bank 1; 1 reg for LTD */
> +#define LTD_HV_LL_REG 0x46 /* Bank 1; 1 reg for LTD */
> +#define LTD_LV_LL_REG 0x47 /* Bank 1; 1 reg for LTD */
> +#define TEMP_CH1_CH_REG 0x05 /* Bank 1; 1 reg for LTD */
> +#define TEMP_CH1_W_REG 0x06 /* Bank 1; 1 reg for LTD */
> +#define TEMP_CH1_WH_REG 0x07 /* Bank 1; 1 reg for LTD */
> +#define TEMP_CH1_C_REG 0x04 /* Bank 1; 1 reg per sensor */
> +#define DTS_T_CPU1_C_REG 0x90 /* Bank 1; 1 reg per sensor */
> +#define DTS_T_CPU1_CH_REG 0x91 /* Bank 1; 1 reg per sensor */
> +#define DTS_T_CPU1_W_REG 0x92 /* Bank 1; 1 reg per sensor */
> +#define DTS_T_CPU1_WH_REG 0x93 /* Bank 1; 1 reg per sensor */
> #define FANIN1_HV_REG 0x80 /* Bank 0; 2 regs (HV/LV) per sensor */
> +#define FANIN1_HV_HL_REG 0x60 /* Bank 1; 2 regs (HV/LV) per sensor */
> +#define FANIN1_LV_HL_REG 0x61 /* Bank 1; 2 regs (HV/LV) per sensor */
> #define T_CPU1_HV_REG 0xA0 /* Bank 0; 2 regs (HV/LV) per sensor */
>
> #define PRTS_REG 0x03 /* Bank 2 */
> @@ -58,6 +81,8 @@
> #define FANCTL1_FMR_REG 0x00 /* Bank 3; 1 reg per channel */
> #define FANCTL1_OUT_REG 0x10 /* Bank 3; 1 reg per channel */
>
> +#define ENABLE_TSI BIT(1)
> +
> static const unsigned short normal_i2c[] = {
> 0x2d, 0x2e, I2C_CLIENT_END
> };
> @@ -72,6 +97,7 @@ struct nct7904_data {
> u8 fan_mode[FANCTL_MAX];
> u8 enable_dts;
> u8 has_dts;
> + u8 temp_mode; /* 0: TR mode, 1: TD mode */
> };
>
> /* Access functions */
> @@ -170,6 +196,25 @@ static int nct7904_read_fan(struct device *dev, u32 attr, int channel,
> rpm = 1350000 / cnt;
> *val = rpm;
> return 0;
> + case hwmon_fan_min:
> + ret = nct7904_read_reg16(data, BANK_1,
> + FANIN1_HV_HL_REG + channel * 2);
> + if (ret < 0)
> + return ret;
> + cnt = ((ret & 0xff00) >> 3) | (ret & 0x1f);
> + if (cnt == 0x1fff)
> + rpm = 0;
> + else
> + rpm = 1350000 / cnt;
This is problematic if cnt == 0 (I understand that existing code further above
has the same problem, so it would be ok to fix both with a separate patch).
> + *val = rpm;
> + return 0;
> + case hwmon_fan_alarm:
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS7_REG + (channel >> 3));
> + if (ret < 0)
> + return ret;
> + *val = (ret >> (channel & 0x07)) & 1;
> + return 0;
> default:
> return -EOPNOTSUPP;
> }
> @@ -179,8 +224,20 @@ static umode_t nct7904_fan_is_visible(const void *_data, u32 attr, int channel)
> {
> const struct nct7904_data *data = _data;
>
> - if (attr == hwmon_fan_input && data->fanin_mask & (1 << channel))
> - return 0444;
> + switch (attr) {
> + case hwmon_fan_input:
> + case hwmon_fan_alarm:
> + if (data->fanin_mask & (1 << channel))
> + return 0444;
> + break;
> + case hwmon_fan_min:
> + if (data->fanin_mask & (1 << channel))
> + return 0644;
> + break;
> + default:
> + break;
> + }
> +
> return 0;
> }
>
> @@ -211,6 +268,37 @@ static int nct7904_read_in(struct device *dev, u32 attr, int channel,
> volt *= 6; /* 0.006V scale */
> *val = volt;
> return 0;
> + case hwmon_in_min:
> + ret = nct7904_read_reg16(data, BANK_1,
> + VSEN1_HV_LL_REG + index * 4);
> + if (ret < 0)
> + return ret;
> + volt = ((ret & 0xff00) >> 5) | (ret & 0x7);
> + if (index < 14)
> + volt *= 2; /* 0.002V scale */
> + else
> + volt *= 6; /* 0.006V scale */
> + *val = volt;
> + return 0;
> + case hwmon_in_max:
> + ret = nct7904_read_reg16(data, BANK_1,
> + VSEN1_HV_HL_REG + index * 4);
> + if (ret < 0)
> + return ret;
> + volt = ((ret & 0xff00) >> 5) | (ret & 0x7);
> + if (index < 14)
> + volt *= 2; /* 0.002V scale */
> + else
> + volt *= 6; /* 0.006V scale */
> + *val = volt;
> + return 0;
> + case hwmon_in_alarm:
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS1_REG + (index >> 3));
> + if (ret < 0)
> + return ret;
> + *val = (ret >> (index & 0x07)) & 1;
> + return 0;
> default:
> return -EOPNOTSUPP;
> }
> @@ -221,9 +309,20 @@ static umode_t nct7904_in_is_visible(const void *_data, u32 attr, int channel)
> const struct nct7904_data *data = _data;
> int index = nct7904_chan_to_index[channel];
>
> - if (channel > 0 && attr == hwmon_in_input &&
> - (data->vsen_mask & BIT(index)))
> - return 0444;
> + switch (attr) {
> + case hwmon_in_input:
> + case hwmon_in_alarm:
> + if (channel > 0 && (data->vsen_mask & BIT(index)))
> + return 0444;
> + break;
> + case hwmon_in_min:
> + case hwmon_in_max:
> + if (channel > 0 && (data->vsen_mask & BIT(index)))
> + return 0644;
> + break;
> + default:
> + break;
> + }
>
> return 0;
> }
> @@ -233,6 +332,7 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
> {
> struct nct7904_data *data = dev_get_drvdata(dev);
> int ret, temp;
> + unsigned int reg1, reg2, reg3;
>
> switch (attr) {
> case hwmon_temp_input:
> @@ -250,16 +350,100 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
> temp = ((ret & 0xff00) >> 5) | (ret & 0x7);
> *val = sign_extend32(temp, 10) * 125;
> return 0;
> + case hwmon_temp_alarm:
> + if (channel < 5) {
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS1_REG);
> + if (ret < 0)
> + return ret;
> + *val = (ret >> (((channel * 2) + 1) & 0x07)) & 1;
> + } else {
> + if ((channel - 5) < 4) {
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS7_REG +
> + ((channel - 5) >> 3));
> + if (ret < 0)
> + return ret;
> + *val = (ret >> ((channel - 5) & 0x07)) & 1;
> + } else {
> + ret = nct7904_read_reg(data, BANK_0,
> + SMI_STS8_REG +
> + ((channel - 5) >> 3));
> + if (ret < 0)
> + return ret;
> + *val = (ret >> (((channel - 5) & 0x07) - 4))
> + & 1;
> + }
> + }
> + return 0;
> + case hwmon_temp_type:
> + if (channel < 5) {
> + if ((data->tcpu_mask >> channel) & 0x01) {
> + if ((data->temp_mode >> channel) & 0x01)
> + *val = 3; /* TD */
> + else
> + *val = 4; /* TR */
> + } else {
> + *val = 0;
> + }
> + } else {
> + if ((data->has_dts >> (channel - 5)) & 0x01) {
> + if (data->enable_dts & ENABLE_TSI)
> + *val = 5; /* TSI */
> + else
> + *val = 6; /* PECI */
> + } else {
> + *val = 0;
> + }
> + }
> + return 0;
> + case hwmon_temp_max:
> + reg1 = LTD_HV_HL_REG;
> + reg2 = TEMP_CH1_W_REG;
> + reg3 = DTS_T_CPU1_W_REG;
> + break;
> + case hwmon_temp_max_hyst:
> + reg1 = LTD_LV_HL_REG;
> + reg2 = TEMP_CH1_WH_REG;
> + reg3 = DTS_T_CPU1_WH_REG;
> + break;
> + case hwmon_temp_crit:
> + reg1 = LTD_HV_LL_REG;
> + reg2 = TEMP_CH1_C_REG;
> + reg3 = DTS_T_CPU1_C_REG;
> + break;
> + case hwmon_temp_crit_hyst:
> + reg1 = LTD_LV_LL_REG;
> + reg2 = TEMP_CH1_CH_REG;
> + reg3 = DTS_T_CPU1_CH_REG;
> + break;
> default:
> return -EOPNOTSUPP;
> }
> +
> + if (channel == 4)
> + ret = nct7904_read_reg(data, BANK_1, reg1);
> + else if (channel < 5)
> + ret = nct7904_read_reg(data, BANK_1,
> + reg2 + channel * 8);
> + else
> + ret = nct7904_read_reg(data, BANK_1,
> + reg3 + (channel - 5) * 4);
> +
I must admit that I am not too happy about this code, since it moves code
which should be in the case statement with code running afterwards.
A helper function to do the actual read would be a bit nicer
case hwmon_temp_max:
ret = nct7904_read_limit(data, channel, LTD_HV_HL_REG,
TEMP_CH1_W_REG, DTS_T_CPU1_W_REG);
if (ret < 0)
return ret;
*val = ret * 1000;
return 0;
...
I undersatand that is a bit of additional code, but it would be much
cleaner. I'll accept the current code, though, if you disagree.
> + if (ret < 0)
> + return ret;
> + *val = ret * 1000;
> + return 0;
> }
>
> static umode_t nct7904_temp_is_visible(const void *_data, u32 attr, int channel)
> {
> const struct nct7904_data *data = _data;
>
> - if (attr == hwmon_temp_input) {
> + switch (attr) {
> + case hwmon_temp_input:
> + case hwmon_temp_alarm:
> + case hwmon_temp_type:
> if (channel < 5) {
> if (data->tcpu_mask & BIT(channel))
> return 0444;
> @@ -267,6 +451,21 @@ static umode_t nct7904_temp_is_visible(const void *_data, u32 attr, int channel)
> if (data->has_dts & BIT(channel - 5))
> return 0444;
> }
> + break;
> + case hwmon_temp_max:
> + case hwmon_temp_max_hyst:
> + case hwmon_temp_crit:
> + case hwmon_temp_crit_hyst:
> + if (channel < 5) {
> + if (data->tcpu_mask & BIT(channel))
> + return 0644;
> + } else {
> + if (data->has_dts & BIT(channel - 5))
> + return 0644;
> + }
> + break;
> + default:
> + break;
> }
>
> return 0;
> @@ -297,6 +496,137 @@ static int nct7904_read_pwm(struct device *dev, u32 attr, int channel,
> }
> }
>
> +static int nct7904_write_temp(struct device *dev, u32 attr, int channel,
> + long val)
> +{
> + struct nct7904_data *data = dev_get_drvdata(dev);
> + int ret;
> + unsigned int reg1, reg2, reg3;
> +
> + val = clamp_val(val / 1000, -128, 127);
> +
> + switch (attr) {
> + case hwmon_temp_max:
> + reg1 = LTD_HV_HL_REG;
> + reg2 = TEMP_CH1_W_REG;
> + reg3 = DTS_T_CPU1_W_REG;
> + break;
> + case hwmon_temp_max_hyst:
> + reg1 = LTD_LV_HL_REG;
> + reg2 = TEMP_CH1_WH_REG;
> + reg3 = DTS_T_CPU1_WH_REG;
> + break;
> + case hwmon_temp_crit:
> + reg1 = LTD_HV_LL_REG;
> + reg2 = TEMP_CH1_C_REG;
> + reg3 = DTS_T_CPU1_C_REG;
> + break;
> + case hwmon_temp_crit_hyst:
> + reg1 = LTD_LV_LL_REG;
> + reg2 = TEMP_CH1_CH_REG;
> + reg3 = DTS_T_CPU1_CH_REG;
> + break;
> + default:
> + return -EOPNOTSUPP;
> + }
> + if (channel == 4)
> + ret = nct7904_write_reg(data, BANK_1, reg1, val);
> + else if (channel < 5)
> + ret = nct7904_write_reg(data, BANK_1,
> + reg2 + channel * 8, val);
> + else
> + ret = nct7904_write_reg(data, BANK_1,
> + reg3 + (channel - 5) * 4, val);
> +
Same as above.
> + return ret;
> +}
> +
> +static int nct7904_write_fan(struct device *dev, u32 attr, int channel,
> + long val)
> +{
> + struct nct7904_data *data = dev_get_drvdata(dev);
> + int ret;
> + u8 tmp;
> +
> + switch (attr) {
> + case hwmon_fan_min:
> + if (val <= 0)
> + return 0;
This is odd: It silently accepts values <= 0, but doesn't do anything.
Is that really what you want ? Why not something like:
if (val <= 0)
val = 1;
> +
> + val = clamp_val((1350000 + (val >> 1)) / val, 1, 0x1fff);
It took me a while to understand the calculation above. Something like
val = clamp_val(DIV_ROUND_CLOSEST(1350000, val), 1, 0x1fff);
might be a bit easier to understand.
> + tmp = (val >> 5) & 0xff;
> + ret = nct7904_write_reg(data, BANK_1,
> + FANIN1_HV_HL_REG + channel * 2, tmp);
> + if (ret < 0)
> + return ret;
> + tmp = val & 0x1f;
> + ret = nct7904_write_reg(data, BANK_1,
> + FANIN1_LV_HL_REG + channel * 2, tmp);
> + return ret;
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static int nct7904_write_in(struct device *dev, u32 attr, int channel,
> + long val)
> +{
> + struct nct7904_data *data = dev_get_drvdata(dev);
> + int ret, index, tmp;
> +
> + index = nct7904_chan_to_index[channel];
> +
> + if (index < 14)
> + val = val / 2; /* 0.002V scale */
> + else
> + val = val / 6; /* 0.006V scale */
> +
> + val = clamp_val(val, 0, 0x7ff);
> +
> + switch (attr) {
> + case hwmon_in_min:
> + tmp = nct7904_read_reg(data, BANK_1,
> + VSEN1_LV_LL_REG + index * 4);
> + if (tmp < 0)
> + return tmp;
> + tmp &= ~0x7;
> + tmp |= val & 0x7;
> + ret = nct7904_write_reg(data, BANK_1,
> + VSEN1_LV_LL_REG + index * 4, tmp);
> + if (ret < 0)
> + return ret;
> + tmp = nct7904_read_reg(data, BANK_1,
> + VSEN1_HV_LL_REG + index * 4);
> + if (tmp < 0)
> + return tmp;
> + tmp = (val >> 3) & 0xff;
> + ret = nct7904_write_reg(data, BANK_1,
> + VSEN1_HV_LL_REG + index * 4, tmp);
> + return ret;
> + case hwmon_in_max:
> + tmp = nct7904_read_reg(data, BANK_1,
> + VSEN1_LV_HL_REG + index * 4);
> + if (tmp < 0)
> + return tmp;
> + tmp &= ~0x7;
> + tmp |= val & 0x7;
> + ret = nct7904_write_reg(data, BANK_1,
> + VSEN1_LV_HL_REG + index * 4, tmp);
> + if (ret < 0)
> + return ret;
> + tmp = nct7904_read_reg(data, BANK_1,
> + VSEN1_HV_HL_REG + index * 4);
> + if (tmp < 0)
> + return tmp;
> + tmp = (val >> 3) & 0xff;
> + ret = nct7904_write_reg(data, BANK_1,
> + VSEN1_HV_HL_REG + index * 4, tmp);
> + return ret;
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> static int nct7904_write_pwm(struct device *dev, u32 attr, int channel,
> long val)
> {
> @@ -354,8 +684,14 @@ static int nct7904_write(struct device *dev, enum hwmon_sensor_types type,
> u32 attr, int channel, long val)
> {
> switch (type) {
> + case hwmon_in:
> + return nct7904_write_in(dev, attr, channel, val);
> + case hwmon_fan:
> + return nct7904_write_fan(dev, attr, channel, val);
> case hwmon_pwm:
> return nct7904_write_pwm(dev, attr, channel, val);
> + case hwmon_temp:
> + return nct7904_write_temp(dev, attr, channel, val);
> default:
> return -EOPNOTSUPP;
> }
> @@ -404,51 +740,91 @@ static int nct7904_detect(struct i2c_client *client,
>
> static const struct hwmon_channel_info *nct7904_info[] = {
> HWMON_CHANNEL_INFO(in,
> - HWMON_I_INPUT, /* dummy, skipped in is_visible */
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT,
> - HWMON_I_INPUT),
> + /* dummy, skipped in is_visible */
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM,
> + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
> + HWMON_I_ALARM),
> HWMON_CHANNEL_INFO(fan,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT,
> - HWMON_F_INPUT),
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
> + HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM),
> HWMON_CHANNEL_INFO(pwm,
> HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
> HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
> HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
> HWMON_PWM_INPUT | HWMON_PWM_ENABLE),
> HWMON_CHANNEL_INFO(temp,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT,
> - HWMON_T_INPUT),
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST,
> + HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
> + HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
> + HWMON_T_CRIT_HYST),
> NULL
> };
>
> @@ -530,11 +906,14 @@ static int nct7904_probe(struct i2c_client *client,
> if (ret < 0)
> return ret;
>
> + data->temp_mode = 0;
> for (i = 0; i < 4; i++) {
> val = (ret & (0x03 << i)) >> (i * 2);
> bit = (1 << i);
> if (val == 0)
> data->tcpu_mask &= ~bit;
> + else if (val == 0x1 || val == 0x2)
> + data->temp_mode |= bit;
> }
>
> /* PECI */
> @@ -557,7 +936,7 @@ static int nct7904_probe(struct i2c_client *client,
> if (ret < 0)
> return ret;
> data->has_dts = ret & 0xF;
> - if (data->enable_dts & 0x2) {
> + if (data->enable_dts & ENABLE_TSI) {
> ret = nct7904_read_reg(data, BANK_0, DTS_T_CTRL1_REG);
> if (ret < 0)
> return ret;
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread[parent not found: <928e46508bbe1ebc0763c3d2403a5aebe95af552.1561950110.git.amy.shih@advantech.com.tw>]
* [v2 3/3] hwmon: (nct7904) Add extra sysfs support for fan, voltage and temperature.
[not found] <928e46508bbe1ebc0763c3d2403a5aebe95af552.1561950110.git.amy.shih@advantech.com.tw>
@ 2019-07-01 3:12 ` Amy.Shih
0 siblings, 0 replies; 4+ messages in thread
From: Amy.Shih @ 2019-07-01 3:12 UTC (permalink / raw)
To: she90122
Cc: amy.shih, oakley.ding, jia.sui, Jean Delvare, Guenter Roeck,
linux-hwmon, linux-kernel
From: "amy.shih" <amy.shih@advantech.com.tw>
NCT-7904D also supports reading of channel limitation registers
and SMI status registers for fan, voltage and temperature monitoring,
and also supports reading of temperature sensor type which is thermal diode,
thermistor, AMD SB-TSI or Intel PECI, thus add below sysfs nodes:
-fan[1-*]_min
-fan[1-*]_alarm
-in[1-*]_min
-in[1-*]_max
-in[1-*]_alarm
-temp[1-*]_max
-temp[1-*]_max_hyst
-temp[1-*]_emergency
-temp[1-*]_emergency_hyst
-temp[1-*]_alarm
-temp[1-*]_type
Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
---
Changes in v2:
- Fix bad fallthrough in various switch statements.
- Fix the wrong declared of tmp as u8 in nct7904_write_in, declared tmp to int.
- Fix incorrect register setting of voltage.
- Fix incorrect register bit mapping of temperature alarm.
- Fix wrong return code 0x1fff in function nct7904_write_fan.
- Delete wrong comment in function nct7904_write_in.
- Fix wrong attribute names for temperature.
- Fix wrong registers setting for temperature.
---
drivers/hwmon/nct7904.c | 469 ++++++++++++++++++++++++++++++++++++----
1 file changed, 424 insertions(+), 45 deletions(-)
diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
index 710c30562fc1..d842c10ba11f 100644
--- a/drivers/hwmon/nct7904.c
+++ b/drivers/hwmon/nct7904.c
@@ -46,10 +46,33 @@
#define DTS_T_CTRL1_REG 0x27
#define VT_ADC_MD_REG 0x2E
+#define VSEN1_HV_LL_REG 0x02 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define VSEN1_LV_LL_REG 0x03 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define VSEN1_HV_HL_REG 0x00 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define VSEN1_LV_HL_REG 0x01 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define SMI_STS1_REG 0xC1 /* Bank 0; SMI Status Register */
+#define SMI_STS5_REG 0xC5 /* Bank 0; SMI Status Register */
+#define SMI_STS7_REG 0xC7 /* Bank 0; SMI Status Register */
+#define SMI_STS8_REG 0xC8 /* Bank 0; SMI Status Register */
+
#define VSEN1_HV_REG 0x40 /* Bank 0; 2 regs (HV/LV) per sensor */
#define TEMP_CH1_HV_REG 0x42 /* Bank 0; same as VSEN2_HV */
#define LTD_HV_REG 0x62 /* Bank 0; 2 regs in VSEN range */
+#define LTD_HV_HL_REG 0x44 /* Bank 1; 1 reg for LTD */
+#define LTD_LV_HL_REG 0x45 /* Bank 1; 1 reg for LTD */
+#define LTD_HV_LL_REG 0x46 /* Bank 1; 1 reg for LTD */
+#define LTD_LV_LL_REG 0x47 /* Bank 1; 1 reg for LTD */
+#define TEMP_CH1_CH_REG 0x05 /* Bank 1; 1 reg for LTD */
+#define TEMP_CH1_W_REG 0x06 /* Bank 1; 1 reg for LTD */
+#define TEMP_CH1_WH_REG 0x07 /* Bank 1; 1 reg for LTD */
+#define TEMP_CH1_C_REG 0x04 /* Bank 1; 1 reg per sensor */
+#define DTS_T_CPU1_C_REG 0x90 /* Bank 1; 1 reg per sensor */
+#define DTS_T_CPU1_CH_REG 0x91 /* Bank 1; 1 reg per sensor */
+#define DTS_T_CPU1_W_REG 0x92 /* Bank 1; 1 reg per sensor */
+#define DTS_T_CPU1_WH_REG 0x93 /* Bank 1; 1 reg per sensor */
#define FANIN1_HV_REG 0x80 /* Bank 0; 2 regs (HV/LV) per sensor */
+#define FANIN1_HV_HL_REG 0x60 /* Bank 1; 2 regs (HV/LV) per sensor */
+#define FANIN1_LV_HL_REG 0x61 /* Bank 1; 2 regs (HV/LV) per sensor */
#define T_CPU1_HV_REG 0xA0 /* Bank 0; 2 regs (HV/LV) per sensor */
#define PRTS_REG 0x03 /* Bank 2 */
@@ -58,6 +81,8 @@
#define FANCTL1_FMR_REG 0x00 /* Bank 3; 1 reg per channel */
#define FANCTL1_OUT_REG 0x10 /* Bank 3; 1 reg per channel */
+#define ENABLE_TSI BIT(1)
+
static const unsigned short normal_i2c[] = {
0x2d, 0x2e, I2C_CLIENT_END
};
@@ -72,6 +97,7 @@ struct nct7904_data {
u8 fan_mode[FANCTL_MAX];
u8 enable_dts;
u8 has_dts;
+ u8 temp_mode; /* 0: TR mode, 1: TD mode */
};
/* Access functions */
@@ -170,6 +196,25 @@ static int nct7904_read_fan(struct device *dev, u32 attr, int channel,
rpm = 1350000 / cnt;
*val = rpm;
return 0;
+ case hwmon_fan_min:
+ ret = nct7904_read_reg16(data, BANK_1,
+ FANIN1_HV_HL_REG + channel * 2);
+ if (ret < 0)
+ return ret;
+ cnt = ((ret & 0xff00) >> 3) | (ret & 0x1f);
+ if (cnt == 0x1fff)
+ rpm = 0;
+ else
+ rpm = 1350000 / cnt;
+ *val = rpm;
+ return 0;
+ case hwmon_fan_alarm:
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS7_REG + (channel >> 3));
+ if (ret < 0)
+ return ret;
+ *val = (ret >> (channel & 0x07)) & 1;
+ return 0;
default:
return -EOPNOTSUPP;
}
@@ -179,8 +224,20 @@ static umode_t nct7904_fan_is_visible(const void *_data, u32 attr, int channel)
{
const struct nct7904_data *data = _data;
- if (attr == hwmon_fan_input && data->fanin_mask & (1 << channel))
- return 0444;
+ switch (attr) {
+ case hwmon_fan_input:
+ case hwmon_fan_alarm:
+ if (data->fanin_mask & (1 << channel))
+ return 0444;
+ break;
+ case hwmon_fan_min:
+ if (data->fanin_mask & (1 << channel))
+ return 0644;
+ break;
+ default:
+ break;
+ }
+
return 0;
}
@@ -211,6 +268,37 @@ static int nct7904_read_in(struct device *dev, u32 attr, int channel,
volt *= 6; /* 0.006V scale */
*val = volt;
return 0;
+ case hwmon_in_min:
+ ret = nct7904_read_reg16(data, BANK_1,
+ VSEN1_HV_LL_REG + index * 4);
+ if (ret < 0)
+ return ret;
+ volt = ((ret & 0xff00) >> 5) | (ret & 0x7);
+ if (index < 14)
+ volt *= 2; /* 0.002V scale */
+ else
+ volt *= 6; /* 0.006V scale */
+ *val = volt;
+ return 0;
+ case hwmon_in_max:
+ ret = nct7904_read_reg16(data, BANK_1,
+ VSEN1_HV_HL_REG + index * 4);
+ if (ret < 0)
+ return ret;
+ volt = ((ret & 0xff00) >> 5) | (ret & 0x7);
+ if (index < 14)
+ volt *= 2; /* 0.002V scale */
+ else
+ volt *= 6; /* 0.006V scale */
+ *val = volt;
+ return 0;
+ case hwmon_in_alarm:
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS1_REG + (index >> 3));
+ if (ret < 0)
+ return ret;
+ *val = (ret >> (index & 0x07)) & 1;
+ return 0;
default:
return -EOPNOTSUPP;
}
@@ -221,9 +309,20 @@ static umode_t nct7904_in_is_visible(const void *_data, u32 attr, int channel)
const struct nct7904_data *data = _data;
int index = nct7904_chan_to_index[channel];
- if (channel > 0 && attr == hwmon_in_input &&
- (data->vsen_mask & BIT(index)))
- return 0444;
+ switch (attr) {
+ case hwmon_in_input:
+ case hwmon_in_alarm:
+ if (channel > 0 && (data->vsen_mask & BIT(index)))
+ return 0444;
+ break;
+ case hwmon_in_min:
+ case hwmon_in_max:
+ if (channel > 0 && (data->vsen_mask & BIT(index)))
+ return 0644;
+ break;
+ default:
+ break;
+ }
return 0;
}
@@ -233,6 +332,7 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
{
struct nct7904_data *data = dev_get_drvdata(dev);
int ret, temp;
+ unsigned int reg1, reg2, reg3;
switch (attr) {
case hwmon_temp_input:
@@ -250,16 +350,100 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
temp = ((ret & 0xff00) >> 5) | (ret & 0x7);
*val = sign_extend32(temp, 10) * 125;
return 0;
+ case hwmon_temp_alarm:
+ if (channel < 5) {
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS1_REG);
+ if (ret < 0)
+ return ret;
+ *val = (ret >> (((channel * 2) + 1) & 0x07)) & 1;
+ } else {
+ if ((channel - 5) < 4) {
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS7_REG +
+ ((channel - 5) >> 3));
+ if (ret < 0)
+ return ret;
+ *val = (ret >> ((channel - 5) & 0x07)) & 1;
+ } else {
+ ret = nct7904_read_reg(data, BANK_0,
+ SMI_STS8_REG +
+ ((channel - 5) >> 3));
+ if (ret < 0)
+ return ret;
+ *val = (ret >> (((channel - 5) & 0x07) - 4))
+ & 1;
+ }
+ }
+ return 0;
+ case hwmon_temp_type:
+ if (channel < 5) {
+ if ((data->tcpu_mask >> channel) & 0x01) {
+ if ((data->temp_mode >> channel) & 0x01)
+ *val = 3; /* TD */
+ else
+ *val = 4; /* TR */
+ } else {
+ *val = 0;
+ }
+ } else {
+ if ((data->has_dts >> (channel - 5)) & 0x01) {
+ if (data->enable_dts & ENABLE_TSI)
+ *val = 5; /* TSI */
+ else
+ *val = 6; /* PECI */
+ } else {
+ *val = 0;
+ }
+ }
+ return 0;
+ case hwmon_temp_max:
+ reg1 = LTD_HV_HL_REG;
+ reg2 = TEMP_CH1_W_REG;
+ reg3 = DTS_T_CPU1_W_REG;
+ break;
+ case hwmon_temp_max_hyst:
+ reg1 = LTD_LV_HL_REG;
+ reg2 = TEMP_CH1_WH_REG;
+ reg3 = DTS_T_CPU1_WH_REG;
+ break;
+ case hwmon_temp_crit:
+ reg1 = LTD_HV_LL_REG;
+ reg2 = TEMP_CH1_C_REG;
+ reg3 = DTS_T_CPU1_C_REG;
+ break;
+ case hwmon_temp_crit_hyst:
+ reg1 = LTD_LV_LL_REG;
+ reg2 = TEMP_CH1_CH_REG;
+ reg3 = DTS_T_CPU1_CH_REG;
+ break;
default:
return -EOPNOTSUPP;
}
+
+ if (channel == 4)
+ ret = nct7904_read_reg(data, BANK_1, reg1);
+ else if (channel < 5)
+ ret = nct7904_read_reg(data, BANK_1,
+ reg2 + channel * 8);
+ else
+ ret = nct7904_read_reg(data, BANK_1,
+ reg3 + (channel - 5) * 4);
+
+ if (ret < 0)
+ return ret;
+ *val = ret * 1000;
+ return 0;
}
static umode_t nct7904_temp_is_visible(const void *_data, u32 attr, int channel)
{
const struct nct7904_data *data = _data;
- if (attr == hwmon_temp_input) {
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_alarm:
+ case hwmon_temp_type:
if (channel < 5) {
if (data->tcpu_mask & BIT(channel))
return 0444;
@@ -267,6 +451,21 @@ static umode_t nct7904_temp_is_visible(const void *_data, u32 attr, int channel)
if (data->has_dts & BIT(channel - 5))
return 0444;
}
+ break;
+ case hwmon_temp_max:
+ case hwmon_temp_max_hyst:
+ case hwmon_temp_crit:
+ case hwmon_temp_crit_hyst:
+ if (channel < 5) {
+ if (data->tcpu_mask & BIT(channel))
+ return 0644;
+ } else {
+ if (data->has_dts & BIT(channel - 5))
+ return 0644;
+ }
+ break;
+ default:
+ break;
}
return 0;
@@ -297,6 +496,137 @@ static int nct7904_read_pwm(struct device *dev, u32 attr, int channel,
}
}
+static int nct7904_write_temp(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct nct7904_data *data = dev_get_drvdata(dev);
+ int ret;
+ unsigned int reg1, reg2, reg3;
+
+ val = clamp_val(val / 1000, -128, 127);
+
+ switch (attr) {
+ case hwmon_temp_max:
+ reg1 = LTD_HV_HL_REG;
+ reg2 = TEMP_CH1_W_REG;
+ reg3 = DTS_T_CPU1_W_REG;
+ break;
+ case hwmon_temp_max_hyst:
+ reg1 = LTD_LV_HL_REG;
+ reg2 = TEMP_CH1_WH_REG;
+ reg3 = DTS_T_CPU1_WH_REG;
+ break;
+ case hwmon_temp_crit:
+ reg1 = LTD_HV_LL_REG;
+ reg2 = TEMP_CH1_C_REG;
+ reg3 = DTS_T_CPU1_C_REG;
+ break;
+ case hwmon_temp_crit_hyst:
+ reg1 = LTD_LV_LL_REG;
+ reg2 = TEMP_CH1_CH_REG;
+ reg3 = DTS_T_CPU1_CH_REG;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+ if (channel == 4)
+ ret = nct7904_write_reg(data, BANK_1, reg1, val);
+ else if (channel < 5)
+ ret = nct7904_write_reg(data, BANK_1,
+ reg2 + channel * 8, val);
+ else
+ ret = nct7904_write_reg(data, BANK_1,
+ reg3 + (channel - 5) * 4, val);
+
+ return ret;
+}
+
+static int nct7904_write_fan(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct nct7904_data *data = dev_get_drvdata(dev);
+ int ret;
+ u8 tmp;
+
+ switch (attr) {
+ case hwmon_fan_min:
+ if (val <= 0)
+ return 0;
+
+ val = clamp_val((1350000 + (val >> 1)) / val, 1, 0x1fff);
+ tmp = (val >> 5) & 0xff;
+ ret = nct7904_write_reg(data, BANK_1,
+ FANIN1_HV_HL_REG + channel * 2, tmp);
+ if (ret < 0)
+ return ret;
+ tmp = val & 0x1f;
+ ret = nct7904_write_reg(data, BANK_1,
+ FANIN1_LV_HL_REG + channel * 2, tmp);
+ return ret;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int nct7904_write_in(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct nct7904_data *data = dev_get_drvdata(dev);
+ int ret, index, tmp;
+
+ index = nct7904_chan_to_index[channel];
+
+ if (index < 14)
+ val = val / 2; /* 0.002V scale */
+ else
+ val = val / 6; /* 0.006V scale */
+
+ val = clamp_val(val, 0, 0x7ff);
+
+ switch (attr) {
+ case hwmon_in_min:
+ tmp = nct7904_read_reg(data, BANK_1,
+ VSEN1_LV_LL_REG + index * 4);
+ if (tmp < 0)
+ return tmp;
+ tmp &= ~0x7;
+ tmp |= val & 0x7;
+ ret = nct7904_write_reg(data, BANK_1,
+ VSEN1_LV_LL_REG + index * 4, tmp);
+ if (ret < 0)
+ return ret;
+ tmp = nct7904_read_reg(data, BANK_1,
+ VSEN1_HV_LL_REG + index * 4);
+ if (tmp < 0)
+ return tmp;
+ tmp = (val >> 3) & 0xff;
+ ret = nct7904_write_reg(data, BANK_1,
+ VSEN1_HV_LL_REG + index * 4, tmp);
+ return ret;
+ case hwmon_in_max:
+ tmp = nct7904_read_reg(data, BANK_1,
+ VSEN1_LV_HL_REG + index * 4);
+ if (tmp < 0)
+ return tmp;
+ tmp &= ~0x7;
+ tmp |= val & 0x7;
+ ret = nct7904_write_reg(data, BANK_1,
+ VSEN1_LV_HL_REG + index * 4, tmp);
+ if (ret < 0)
+ return ret;
+ tmp = nct7904_read_reg(data, BANK_1,
+ VSEN1_HV_HL_REG + index * 4);
+ if (tmp < 0)
+ return tmp;
+ tmp = (val >> 3) & 0xff;
+ ret = nct7904_write_reg(data, BANK_1,
+ VSEN1_HV_HL_REG + index * 4, tmp);
+ return ret;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
static int nct7904_write_pwm(struct device *dev, u32 attr, int channel,
long val)
{
@@ -354,8 +684,14 @@ static int nct7904_write(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, long val)
{
switch (type) {
+ case hwmon_in:
+ return nct7904_write_in(dev, attr, channel, val);
+ case hwmon_fan:
+ return nct7904_write_fan(dev, attr, channel, val);
case hwmon_pwm:
return nct7904_write_pwm(dev, attr, channel, val);
+ case hwmon_temp:
+ return nct7904_write_temp(dev, attr, channel, val);
default:
return -EOPNOTSUPP;
}
@@ -404,51 +740,91 @@ static int nct7904_detect(struct i2c_client *client,
static const struct hwmon_channel_info *nct7904_info[] = {
HWMON_CHANNEL_INFO(in,
- HWMON_I_INPUT, /* dummy, skipped in is_visible */
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT,
- HWMON_I_INPUT),
+ /* dummy, skipped in is_visible */
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM),
HWMON_CHANNEL_INFO(fan,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT,
- HWMON_F_INPUT),
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM,
+ HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_ALARM),
HWMON_CHANNEL_INFO(pwm,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE),
HWMON_CHANNEL_INFO(temp,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT,
- HWMON_T_INPUT),
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST,
+ HWMON_T_INPUT | HWMON_T_ALARM | HWMON_T_MAX |
+ HWMON_T_MAX_HYST | HWMON_T_TYPE | HWMON_T_CRIT |
+ HWMON_T_CRIT_HYST),
NULL
};
@@ -530,11 +906,14 @@ static int nct7904_probe(struct i2c_client *client,
if (ret < 0)
return ret;
+ data->temp_mode = 0;
for (i = 0; i < 4; i++) {
val = (ret & (0x03 << i)) >> (i * 2);
bit = (1 << i);
if (val == 0)
data->tcpu_mask &= ~bit;
+ else if (val == 0x1 || val == 0x2)
+ data->temp_mode |= bit;
}
/* PECI */
@@ -557,7 +936,7 @@ static int nct7904_probe(struct i2c_client *client,
if (ret < 0)
return ret;
data->has_dts = ret & 0xF;
- if (data->enable_dts & 0x2) {
+ if (data->enable_dts & ENABLE_TSI) {
ret = nct7904_read_reg(data, BANK_0, DTS_T_CTRL1_REG);
if (ret < 0)
return ret;
--
2.17.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-07-01 17:00 UTC | newest]
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[not found] <928e46508bbe1ebc0763c3d2403a5aebe95af552.1561959015.git.amy.shih@advantech.com.tw>
2019-07-01 5:32 ` [v2 3/3] hwmon: (nct7904) Add extra sysfs support for fan, voltage and temperature Amy.Shih
2019-07-01 13:22 ` Guenter Roeck
2019-07-01 17:00 Guenter Roeck
[not found] <928e46508bbe1ebc0763c3d2403a5aebe95af552.1561950110.git.amy.shih@advantech.com.tw>
2019-07-01 3:12 ` Amy.Shih
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